--- src/VBox/Main/Makefile.kmk.orig	2021-01-07 15:41:36 UTC
+++ src/VBox/Main/Makefile.kmk
@@ -646,6 +646,7 @@ VBoxSVC_SOURCES.os2 = \
 
 VBoxSVC_SOURCES.freebsd = \
 	src-server/freebsd/HostHardwareFreeBSD.cpp \
+	$(if $(VBOX_WITH_DBUS),src-server/linux/HostPowerLinux.cpp) \
 	src-server/HostDnsServiceResolvConf.cpp